I have figured this out. I went into the task and changed the note it’s attached to, to Things to Do, and the previous note it attached to dropped off. I also changed the default note to Things to do and any task I enter now, not related to a particular note, attaches to that. So I can have tasks attach to Things to Do, and if I want to attach to a different note later, I can change it. It’s like notes falling into the inbox and then change to a notebook at a later time.